19.参与我们创造新世界

　take part in the new world we create

18.贫困、战争与暴力 poverty, war and violence

17.在农村地区　 in rural areas

16.喝到洁净的水

have access to clean drinking water

15.地球上的人们 the people on earth

14.世界卫生组织　 the World Health Organization

13.卫生状况恶劣　 poor sanitation

12.饮水污染　 contaminated drinking water

11.三大公害 the big three

10.关于不同题目发表演讲

　speak about different topics